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首页 鸭式布局的演义

鸭式布局的演义.doc

鸭式布局的演义

李冰心
2018-10-13 0人阅读 举报 0 0 0 暂无简介

简介:本文档为《鸭式布局的演义doc》,可适用于社会民生领域

鸭式布局的演义Duck!Duck!Duck!Thehistoryofducklayoutcomments()Txtdebutflying,pleasenotetheauthorQBQmaddogchenInadditiontobooksandpapers,partofthedatacitedabrick,YFtwoacademictyrantsspeakAgeniusnamedBadittrichCusiman,thepioneerandfounderofmodernaerodynamics,servedinNaziGermanyintheearlydaysandwascarveduptoBritainafterthewarTheEST,whowrote"aerodynamics"in,isnowadesignatedtextbookforaviationprofessionalsinhighereducationaroundtheworldInthefirsttenyears,heledthesweptwingforhighspeedaircraft,theflexorflexorseamantips,seamanfairingdesignconcept,calculationmethodofwingloadratioafteranyaspect,thismethodisstillnowsubsonicbasedwingdesignalgorithmisoneofthesecondtenyearsofresearchahistoryofaviationsecondusingflowdetachedvortices,whichisthebasisforthedevelopmentofadvancedfightersuntiltodaythelasttenyears,studiedthirdhypersonicflowregimes,seamanflexion,createdtheconceptofwaverider,today'sGaletandDSIisonlytwobyinletoftheprimarywavederivativesintheoryAtthebeginningofthes,thetwogenerationfighteraerodynamiccharacteristicsoflayoutdesignarestillattachedtoavoidflowandrestrainairseparationbutformobilityrequirementscanbeusedtopursuetheangleofattackincreases,separationisinevitableWithclosecoupledcanardfixedSwedishSAABfighterwillvortexliftapplications,toachievecontrolofflowseparationandutilizationofdetachedvorticeshasbeenusedwidelyuntiltodayTheapplicationofvortexliftfighter,mainlyrelyontheairflowfromthevortexgenerator(canardstrake)frontseparatingstablevortex,highspeedrotatingairflowincreasesthenegativepressureofthewingsurface,thevortexintensityincreaseswiththeincreaseoftheangleofattack,generatevortexliftlarge,showedastrongobviousintheslopeoftheliftcurveNonlinearAsaresult,thevortexliftbringshugeliftbenefits,butalsopresentsthesamechallengetothefighter'scontroltechnologyFromtheapplicationlevelofvortexlift(andalsorepresentsthelevelofactivecontrol),theaerodynamiclevelofthethreegenerationmachinecanbedividedintothreestagesThefirststageinFasatypicalthreegenerationmachinethisearlyandnovortexgenerator,withouttheapplicationofvortexlift,staticlayout,controlaugmentationthesecondstageisF(thefirsttruethreegenerationfighter)andSue,withasmallstrakeasvortexgeneratorsarethecommoncharacteristics,andbegantorelaxedstaticstability,simulationofFBWtomeetthecontrolrequirementsthirdstages,oneistousetheFEFedgeandFCofChina,ontheotherhandistheuseofmovablecanardsoftheEuropeanwind,typhoon,GripenandChinaannihilatesfighter,thisstagehaveadoptedtheheightofstaticinstabilitydesignandSimulationofatelexhasbeenunabletomeetthedemand,digitaltelexbecomestandardIngeneral,thegreatertheaerodynamicgain,thegreaterthedegreeofcontroldifficultyandriskInthegenerallayoutoffighter,asthepitchcontrolsurfacehorizontaltailgenerallyinthetailpositioninmanymodelsinordertopursuethemaximumcontroltorque,butalsoextendstothetailnozzle,toacertainextentcanbeapproximatedthattherewillbenoairflowthroughthetailoftheaircraftitselfimpactandthecanardlayoutaspitchthecanardwingcontrolsurfacesplacedintheairbeforepassingittocontinuetoparticipateinthewholeflowfieldofthebody,especiallythecanardvortexgeneratorisalsotherolechangeofcanardwingabovethestatedirectlyleadstothechangeofeddycurrentsystem,sotheeffectofcanarddeflectiononthefartailtothecomplexandintenseTheconventionallayoutisnotknownwithadvantagesofpneumaticcontrolabilityofvortexgenerator,suchasthetechnologyofmovablecanardsmovablestrakecloser,butbecausetheefficiencyandcostissuesisnotpracticalMorecomplexanddramaticimpactsmeangreaterpotentialAllmovingcanardfighterinthecanardaerodynamictheoryandactivecontrolonthelevelofdemandisfarhigherthanthatofconventionallayout,includingthethreegenerationofthelatelargeedgeofgenerallayoutThisisthetypeofaircraftgenerallyappearlate,agoodflightperformanceoncetheuseofcanardallmovingcanardiscalledthethreegenerationsemilayout,ifonlyfromthepneumaticandactivecontroltechnology,thisisnotunreasonableDefectsinducklayoutFengineerwittyandacerbic,oftenjoke,suchasthebestduckwingislonginthepeopleontheplane,FmobilitystupidlikeadogThecanardisintendedtoreviewthecanarddesignanddifficulttocontrol,especiallyinthecurrentcanardliftenhancementandmanipulationtrimaredifficulttocoordinate,somewhatcarelesswillbeamajorproblem,aslongasthereisenoughthrust,whytopneumaticincometopaysuchahighriskandcost,afullsupportfuckInfact,thisisatypicalAmericanattitude,Americansaretheworld'smostworryaboutaircraftenginethrustisnottheguy,sowhentheFonapileofadvancedtechnology,butonlyrelyonlowwingloadingandhighmaneuverabilitytothrustup,eventheleadingedgeflaparefree,thisisthecase,FthespeedlimitisstillashighasMthickTakeFforexample,ithasalowthrustmodelforexport,usingtheJturbojetengine,andinotherareassuchasaerodynamicchanges,themaneuverabilityisappallingThisissuchabigdogAmericaandthetotaldisregardforothers'selfesteem,focusonflightperformancearoundthethrustoftheengineisenoughtomeettherequirements,thepneumaticline(ofcourse,theUnitedStatesdoglargeaerodynamicdesignisnotnecessarilyevenmuddlealong,tocatchupwiththeothers)andinthepneumaticover,willtodigupeverybitofpotentialandthenquickly,nocountryisnaturallysomeengineTheUnitedStatesisforcedtorefuseThemaximumliftcoefficientincreasecanardfighterdesignbycanardbroughtbythecanardarm(canardchordwingtochorddistance)andthemeanaerodynamicchordratiotodeterminetheratiooftheincreaseissmallThereadercanroughlyberegardedascanardwingandwing,closetotheriseofeddycurrentisemphatically,distanceisfocusedonthemanipulationtrimGiveexamplesofsuccessfulcoordination,oneishopeless,oneiscalleda"returnoftheprodigalson,(LAVI),alionnamedeagleIsraelLawei(LAVI):Lionpneumatic,eccentricandnaive,veryfailureThelionhasfightersfromaroundtheworldtheoneandonlyfeatures,thefirstisthepursuitofhighliftwingleadingedgeeddycurrenteffect,extendstotheintermediatecanardsbelowtheprojection,sweptthesecondlionsofthewingtheresultofthiscombinationisthemanipulationoftheexistenceofahugeproblemtrimacanard,ontheotherhand,atthetrailingedgeofthewingissweptback,theseriousproblemofthepitchingmoment,thereareseriousdefectsinthelargeangleofattackaircrafttrimabilityandmaneuverabilityandtransonicregionalmobility,isadirectresultoftheprojectonlytestkeyreasonsformanytimestoannouncetheabortionofSwedishGripenJAS:attheearlystageofthedesignschemehadabdominalintakescheme,buttakingintoaccountthelightmachinebellyinlettonsfromthegroundlevelemptydesignindexnearandrequireshighwaylandingcapability,finallychangedintobothsidesofintakebecauseoftonnageistoosmall,tohaveacertainangleonthewinghowever,thecanardmustbeplacedinthewingbeforeandabovethewingcase,therelationshipbetweenthepositionofthecanardwingandthespaceisnarrowandcrampedduetoverybadtreatmentIntheearlystageoftheoperation,therewereveryseriousproblems,eventhesafetyoftakeoffandlandingwastheproblemTheaccidentofrolloverandbreakingthelandinggearoccurredduringthehighspeedtaxiing,whichwasinseparablefromtheconstraintsoftheaerodynamicdesignFinally,Americanswhohavemasteredthetechnologyofactiveaircraftcontrolhavemadeacarefulrevisionoftheeagle'stelexsoftware,whichhasmadethehawka"smallcountryboutique"Theriseofthetyphoonandmanipulationwasadoptedonthetrimdivisionmethodineddycurrent,largemovablecanardsplacedbettercontroleffectinthedistaltrim,andthemiddleofthecanardsandthewingmountedsmallshortstraightfixedaerodynamicsurfaceactsasavortexgenerator,theweakeningofthelifteffectofeddycurrentuptoacertainextentthatisacombinationofmovablecanardsandtwofixedcanardsStrictlyspeaking,thisargumentisnotrigorouscouplingdistance,itisclosecoupleddesignanextremecasechoice,andthelionjustinsteadofinthesongoldpaperisclassifiedinthetyphoontypeclosecoupledcanard(betonamoreprofoundunderstandingthansongoldpeoplebutnotmuchtherookie,hadtopulltheoldsongherehaveneitherlearningnorskill,backingup)TheoverallaerodynamicshapeofagustfighteristhesimplestandmostbeautifuloftheexistingcanardfightersTheFrenchintheactivecontroltechnologyonthewaysmarterthantheBritish,twoduckwinggustisusesasvortexgeneratorinmostofthetime,themanipulationoftheparticipationofsmalltrimisnotdeep,itiscontroloftaillessdeltawinginheritthemirageHawkfighter,havedifficultyfindingAmericanemperor!TheUnitedStatesandtheUnitedStates,theUnitedStatesandtheUnitedStatesforcedcattle!Ffighter,thevillaincanarddesignisnotlikealionandatyphoonthatemphasisononeside,notsoclevertobypasstheproblemofwind,nochanceforustohelp,butextremelytoughchoicestakeantihardAduckwingareaisthelargest,andistheoneandonlythepositiveliftcanarddesigntovariablecamberairfoils,alongthedevelopmentofthisdesign,withsignificantimprovementintheliftcoefficientatthesametime,butalsogreatlyincreasedthedifficultyofdesignofvortexflowcoordinationandtheflightcontrolsoftwareTheduckisusuallyusedfighterwingplanformdesignthanthesweepangleandaspect,asthecanardvortexgeneratorcangenerateitsownrelativeareaof~timestherelativemaximumliftcoefficientincrement,coupledwithpositiveliftlargeareaonthecanarditself,youtellmewhatshouldbeabletounderstandtheZhuhaiairshowwhycanpushthanthevillaindon'tdoaverygoodtakeoffaccelerationupThevillaintrimproblemisfurthermanipulatedinthepursuitoftheadjustmentoftherelationshipbetweenthemaximumliftperformancebythecarefulcoordinationofcanards,wingaerodynamicandflightcontroltoimprovethesolutionthisisaveryriskygamblingbehavior,ofcourse,butalsosaidthatthecanardeatverydeeplyresultsAhLosersarealwaysinthewrongfinaldesignLosersarealwaysinthewrong,thisisverysuccessful,maneuverability,agility,maneuverabilityandstability,highliftcoefficient,accountingforallaspectsofthebenefitsareaccountedfor,toavoiddefectsareavoidedOfcourse,theTyphoonfighterselectionalsoimpliesanotherfactoristheconditionofthethrustisthebestexistingcanardfighterinthelargeenoughthrusttoachievehighspeedindex,soitcanpasshighthrustlowwingloading(lowwingloadinglargewingareaandcanbringgoodabilitytomount)toachievegoodmaneuverability,andreducedtheliftcoefficientindexcaneffectivelyreduceaerodynamicdesigndifficultyandrisk,thetyphooncanbesaidtobeacanardinFWhensomeonetalkheadhowadvancedaerodynamicdesignethos,infactisnowinthefourtyphooncanardfighterdynamicgainsminimalmodels,withouthim,onthedesignofhighthrustofitiftheratioisreducedtopushthetyphoonandothercanardfighterslikeThereaderCanyouimagineusingtwoJFenginewillbewhatkindofmobilityBybuyingandsellingofthepeople,nolosingbusinesstodoTheturtleandtheEuropeanwoodlouselikeaswarmofbeescanardfighterisahugeadvantagetothecanardTheseadvantagesnotonlytogiveupFsolutionintheimitationwoodlousethreegenerationselectionmeetingchoicenow,f,willalsofurtherdeepentheapplicationtoChina'sfourthgenerationfighterWhataretheadvantagesofducklayoutWhatpotentialcanbefoundintheevolutionfromthethreegenerationtothefourgenerationYoutellmeifyouwanttoknowwhat,andlistentothenexttimedecomposition

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